Adani Power, a subsidiary of Adani Enterprises, has become the country's largest private power producing company. With the commissioning of fourth unit of 660 mw at its power plant at Tiroda in Maharashtra, the total installed capacity of Adani Power has increased to 8,620 mw. Till now, Tata Power was largest private power producer in India with installed capacity of 8,559 mw.

For several quarters, Adani Power has been incurring heavy losses due to non-availability of domestic coal, rise in prices of imported coal and depreciating currency. But it sees a turnaround following a new Central Electricity Regulatory Commission order.

"We are expecting turnaround in 2014-15. From losses we may increase to more than break even this fiscal," said an Adani Group official.

At present, the company operates four power plants with a total installed capacity of 8,620 mw which includes 4,620 mw at Mundra in Gujarat, 2,640 mw at Tiroda, 1,320 mw at Kawai in Rajasthan and 40 mw of solar power plant at Kutch in Gujarat.

Gautam Adani, chairman of Adani Group, said, "We are now the largest private power producer in India. This achievement is a testimony to our efforts in increasing electricity generation in the country, and only reflects our commitment towards nation building. It is a significant milestone in the path to achieve Adani Power's target of generating 20,000 mw by 2020," he said.

Tata Power announces expansionTata Power Co, the second-largest private power producer, too has lined up new projects

"Tata Power is in the process of executing a number of power plant projects, which, upon completion, are expected to increase the company's overall generation capacity by 849.2 mw," the company said on Thursday.

But due to its right issue, the company can not disclose the time limit of expansion of 849.2 mw.

Anil Sardana, managing director of Tata Power, said in a statement that as one of the largest private sector power generators in India, Tata Power has a strong track record of successfully implementing large and complex projects across the power sector.